The spectrum of singular boundary problems
The spectrum of singular boundary problems
复制标题
奇异边界问题的范围
DOI：
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发表时间：
1961
期刊：
影响因子：
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通讯作者：
M. Birman
中科院分区：
文献类型：
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作者：
M. Birman
一种家禽饮用杯，其杯体具有用于与给水管道接合的输入开口。阀门是指控制水流通过所述输入开口进入所述杯体，所述杯由连接在所述杯上的卡扣连接件支撑。所述卡扣部件可包括与供水管或支撑部件接合的腔体，并且提供保持所述腔体与供水管或支撑部件接合的固定装置。
A poultry drinking cup having a cup body with an input opening for engagement with a water feed line. Valve means control the flow of water through the input opening into the cup body and the cup is supported by a snap-fitting member connected to the cup. The snap-fitting member may include a cavity which is engageable with the water feed line or a support member and retaining means are provided to maintain the cavity in engagement with the water feed line or support member.